Toyota Sienna Service Manual: Wiper switch

COMPONENTS

REMOVAL

1. REMOVE STEERING COLUMN COVER

2. REMOVE WINDSHIELD WIPER SWITCH ASSEMBLY

1.  Disconnect the connector.
2.  Using a screwdriver, disengage the claw and pull out the windshield wiper switch assembly.

NOTICE: The claw will be broken if pressed hard.

HINT: Tape up the screwdriver tip before use.

INSPECTION

1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY

1.  Continuity Check

1.  Check the continuity between each of the terminals of the connector.

Standard:

Front Wiper Switch

Front Washer Switch

Rear Wiper Switch

Rear Washer Switch

2. Intermittent Operation Check

1.  Connect the voltmeter (+) terminal to the terminal 7 (+1) of the connector, the voltmeter (-) terminal to the terminal 2 (EW) of the connector.
2.  Connect the battery (+) to the terminal 17 (+B) of the connector, the battery (-) to the terminal 2 (EW) and the terminal 16 (+S) of the connector.
3.  Turn the wiper switch into the INT position.
4.  Connect the battery (+) to the terminal 16 (+S) of the connector for 5 seconds.
5.  Connect the battery (-) to the terminal 16 (+S) of the connector. Operate the intermittent wiper relay and check voltage between the terminal 7 (+1) and the terminal 2 (EW).

3. Operation Check (Front Wiper)

1.  Turn the wiper switch into the OFF position.
2.  Connect the battery (+) to the terminal 17 (+B) of the connector, the battery (-) to the terminal 16 (+S) and 2 (EW) of the connector.
3.  Connect the voltmeter (+) terminal to the terminal 7 (+1) of the connector, the voltmeter (-) terminal to the terminal 2 (EW) of the connector. Turn the washer switch ON and OFF and check voltage between the terminal 7 (+1) and the terminal 2 (EW).

INSTALLATION

1. INSTALL WINDSHIELD WIPER SWITCH ASSEMBLY

2. REMOVE STEERING COLUMN COVER